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Yücel Yücel Y, Servi H, Polatoğlu K, Nalbantsoy A. Anthemis tricolor Containing Unusual Totarol with Cytotoxic and Acetylcholinesterase-Inhibitory Activity. Chem Biodivers 2024; 21:e202300913. [PMID: 38116908 DOI: 10.1002/cbdv.202300913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 12/16/2023] [Accepted: 12/17/2023] [Indexed: 12/21/2023]
Abstract
Anthemis tricolor is an endemic species of Cyprus, and there is very limited information on its chemistry and pharmacological activities. The study aims to identify the in-vitro cytotoxic and acetylcholinesterase activities of Anthemis tricolor. The compounds responsible for the activities were also identified. Potent extracts of A. tricolor were subjected to preparative isolation and spectral structure determination studies. The chloroform extract contained many components, and due to the small quantity of extract available, enough pure compound(s) cannot be obtained for structure determination studies, though the n-hexane extract afforded two known compounds, totarol (1) and taraxasterol (2). The structures of the compounds (1 and 2) were determined by 1 H and 13 C NMR experiments. The pure compounds were also tested for their acetylcholinesterase inhibitory properties. For compound 1, the IC50 value was found to be 87.88 μg/mL. However, no inhibition was seen for 2. Anthemis tricolor was established to be a valuable source of pharmacologically active compounds and requires further studies.
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Affiliation(s)
- Yasemin Yücel Yücel
- Department of Biochemistry, Faculty of Pharmacy, Altinbas University, Istanbul, Türkiye
| | - Hüseyin Servi
- Department of Pharmacognosy and Phytotherapy, Faculty of Pharmacy, Istanbul Yeni Yuzyıl University, Istanbul, Türkiye
| | - Kaan Polatoğlu
- Department of Analytical Chemistry, Faculty of Pharmacy, Altinbas University, Istanbul, Türkiye
| | - Ayşe Nalbantsoy
- Department of Bioengineering, Faculty of Engineering, Ege University, Izmir, Türkiye
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2
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Azonwade F, Mabanza-Banza BB, Le Ray AM, Bréard D, Blanchard P, Goubalan E, Baba-Moussa L, Banga-Mboko H, Richomme P, Derbré S, Boisard S. Chemodiversity of propolis samples collected in various areas of Benin and Congo: Chromatographic profiling and chemical characterization guided by 13 C NMR dereplication. PHYTOCHEMICAL ANALYSIS : PCA 2023; 34:461-475. [PMID: 37051779 DOI: 10.1002/pca.3227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 06/03/2023]
Abstract
INTRODUCTION Propolis is a resinous natural substance collected by honeybees from buds and exudates of various trees and plants; it is widely accepted that the composition of propolis depends on the phytogeographic characteristics of the site of collection. OBJECTIVES The aim of this study was to determine the phytochemical composition of ethanolic extracts from eight propolis batches collected in different regions of Benin (north, center, and south) and Congo, Africa. MATERIAL AND METHODS Characterization of propolis samples was performed by using different hyphenated chromatographic methods combined with carbon-13 nuclear magnetic resonance (13 C NMR) dereplication with MixONat software. Their antioxidant or anti-advanced glycation end-product (anti-AGE) activity was then evaluated by using diphenylpicrylhydrazyl and bovine serum albumin assays, respectively. RESULTS Chromatographic analyses combined with 13 C NMR dereplication showed that two samples from the center of Benin exhibited, in addition to a huge amount of pentacyclic triterpenes, methoxylated stilbenoids or phenanthrenoids, responsible for the antioxidant activity of the extract for the first one. Among them, combretastatins might be cytotoxic. For the second one, the prenylated flavanones known in Macaranga-type propolis were responsible for its significant anti-AGE activity. The sample from Congo was composed of many triterpene derivatives belonging to Mangifera indica species. CONCLUSION Therefore, propolis from the center of Benin seems to be of particular interest, due to its antioxidant and anti-AGE properties. Nevertheless, as standardization of propolis is difficult in tropical zones due to its great chemodiversity, a systematic phytochemical analysis is required before promoting the use of propolis in food and health products in Africa.
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Affiliation(s)
- François Azonwade
- Laboratory of Biology and Molecular Typing in Microbiology, Faculty of Science and Technology, University of Abomey-Calavi, Cotonou, Benin
| | | | | | | | | | - Elvire Goubalan
- Laboratory of Bioengineering of Food Processes, Faculty of Agronomic Sciences, University of Abomey-Calavi, Cotonou, Bénin
| | - Lamine Baba-Moussa
- Laboratory of Biology and Molecular Typing in Microbiology, Faculty of Science and Technology, University of Abomey-Calavi, Cotonou, Benin
| | - Henri Banga-Mboko
- National High School of Agronomy and Forestry, University Marien Ngouabi, Brazzaville, Congo
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Surek M, Cobre ADF, Fachi MM, Santos TG, Pontarolo R, Crisma AR, Felipe KB, Souza WMD. Propolis authentication of stingless bees by mid-infrared spectroscopy and chemometric analysis. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bouchelaghem S. Propolis characterization and antimicrobial activities against Staphylococcus aureus and Candida albicans: A review. Saudi J Biol Sci 2022; 29:1936-1946. [PMID: 35531223 PMCID: PMC9072893 DOI: 10.1016/j.sjbs.2021.11.063] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/05/2021] [Accepted: 11/28/2021] [Indexed: 01/07/2023] Open
Abstract
Propolis is a plant-based sticky substance that is produced by honeybees. It has been used traditionally by ancient civilizations as a folk medicine, and is known to have many pharmaceutical properties including antioxidant, antibacterial, antifungal, anti-inflammatory, antiviral, and antitumour effects. Worldwide, researchers are still studying the complex composition of propolis to unveil its biological potential, and especially its antimicrobial activity against a variety of multidrug-resistant microorganisms. This review explores scientific reports published during the last decade on the characterization of different types of propolis, and evaluates their antimicrobial activities against Staphylococcus aureus and Candida albicans. Propolis can be divided into different types depending on their chemical composition and physical properties associated with geographic origin and plant sources. Flavonoids, phenols, diterpenes, and aliphatic compounds are the main chemicals that characterize the different types of propolis (Poplar, Brazilian, and Mediterranean), and are responsible for their antimicrobial activity. The extracts of most types of propolis showed greater antibacterial activity against Gram-positive bacteria: particularly on S. aureus, as well as on C. albicans, as compared to Gram-negative pathogens. Propolis acts either by directly interacting with the microbial cells or by stimulating the immune system of the host cells. Some studies have suggested that structural damage to the microorganisms is a possible mechanism by which propolis exhibits its antimicrobial activity. However, the mechanism of action of propolis is still unclear, due to the synergistic interaction of the ingredients of propolis, and this natural substance has multi-target activity in the cell. The broad-spectrum biological potentials of propolis present it as an ideal candidate for the development of new, potent, and cost-effective antimicrobial agents.
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Affiliation(s)
- Sarra Bouchelaghem
- Department of General and Environmental Microbiology, Institute of Biology, University of Pécs, Ifjúság str. 6, 7624 Pécs, Hungary
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Antimicrobial Triterpenoids and Ingol Diterpenes from Propolis of Semi-Arid Region of Morocco. Molecules 2022; 27:molecules27072206. [PMID: 35408603 PMCID: PMC9000693 DOI: 10.3390/molecules27072206] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 03/25/2022] [Accepted: 03/26/2022] [Indexed: 02/04/2023] Open
Abstract
The chemical composition and antimicrobial activity of propolis from a semi-arid region of Morocco were investigated. Fifteen compounds, including triterpenoids (1, 2, 7–12), macrocyclic diterpenes of ingol type (3–6) and aromatic derivatives (13–15), were isolated by various chromatographic methods. Their structures were elucidated by a combination of spectroscopic and chiroptical methods. Compounds 1 and 3 are new natural compounds, and 2, 4–6, and 9–11 are newly isolated from propolis. Moreover, the full nuclear magnetic resonance (NMR) assignments of three of the known compounds (2, 4 and 5) were reported for the first time. Most of the compounds tested, especially the diterpenes 3, 4, and 6, exhibited very good activity against different strains of bacteria and fungi. Compound 3 showed the strongest activity with minimum inhibitory concentrations (MICs) in the range of 4–64 µg/mL. The combination of isolated triterpenoids and ingol diterpenes was found to be characteristic for Euphorbia spp., and Euphorbia officinarum subsp. echinus could be suggested as a probable and new plant source of propolis.
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Johnson LK, Niman SW, Vrubliauskas D, Vanderwal CD. Stereocontrolled Synthesis and Structural Revision of Plebeianiol A. Org Lett 2021; 23:9569-9573. [PMID: 34851132 PMCID: PMC8766249 DOI: 10.1021/acs.orglett.1c03791] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We report the structural revision via synthesis of the abietane diterpenoid plebeianiol A. The synthesis was accomplished by a short and convergent sequence that featured our previously established cobalt-catalyzed hydrogen-atom-transfer-induced radical bicyclization. We further connected plebeianiol A as the likely biogenetic precursor to another previously reported ether-bridged abietane. Finally, we demonstrated that the key cyclization event is efficient with the A-ring diol protected as two different cyclic acetals or in unprotected form.
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Affiliation(s)
- Lucas K. Johnson
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, CA 92697-2025, USA
| | - Scott W. Niman
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, CA 92697-2025, USA
| | - Darius Vrubliauskas
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, CA 92697-2025, USA
| | - Christopher D. Vanderwal
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, CA 92697-2025, USA
- Department of Pharmaceutical Sciences, 101 Theory #100, University of California, Irvine, CA 92617, USA
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Peršurić Ž, Pavelić SK. Bioactives from Bee Products and Accompanying Extracellular Vesicles as Novel Bioactive Components for Wound Healing. Molecules 2021; 26:molecules26123770. [PMID: 34205731 PMCID: PMC8233762 DOI: 10.3390/molecules26123770] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 12/28/2022] Open
Abstract
In recent years, interest has surged among researchers to determine compounds from bee products such as honey, royal jelly, propolis and bee pollen, which are beneficial to human health. Mass spectrometry techniques have shown that bee products contain a number of proven health-promoting compounds but also revealed rather high diversity in the chemical composition of bee products depending on several factors, such as for example botanical sources and geographical origin. In the present paper, we present recent scientific advances in the field of major bioactive compounds from bee products and corresponding regenerative properties. We also discuss extracellular vesicles from bee products as a potential novel bioactive nutraceutical component. Extracellular vesicles are cell-derived membranous structures that show promising potential in various therapeutic areas. It has been extensively reported that the use of vesicles, which are naturally formed in plant and animal cells, as delivery agents have many advantages. Whether the use of extracellular vesicles from bee products represents a new solution for wound healing remains still to be elucidated. However, promising results in specific applications of the bee products in wound healing and tissue regenerative properties of extracellular vesicles provide a good rationale to further explore this idea.
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Affiliation(s)
- Željka Peršurić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia;
- Faculty of Medicine, Juraj Dobrila University of Pula, Zagrebačka 30, HR-52100 Pula, Croatia
| | - Sandra Kraljević Pavelić
- Faculty of Health Studies, University of Rijeka, Viktora Cara Emina 5, HR-51000 Rijeka, Croatia
- Correspondence:
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Svečnjak L, Marijanović Z, Okińczyc P, Marek Kuś P, Jerković I. Mediterranean Propolis from the Adriatic Sea Islands as a Source of Natural Antioxidants: Comprehensive Chemical Biodiversity Determined by GC-MS, FTIR-ATR, UHPLC-DAD-QqTOF-MS, DPPH and FRAP Assay. Antioxidants (Basel) 2020; 9:E337. [PMID: 32326085 PMCID: PMC7222358 DOI: 10.3390/antiox9040337] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/17/2020] [Accepted: 04/17/2020] [Indexed: 12/12/2022] Open
Abstract
There is no systematic report about propolis chemical biodiversity from the Adriatic Sea islands affecting its antioxidant capacity. Therefore, the samples from the islands Krk, Rab, Pag, Biševo and Korčula were collected. Comprehensive methods were used to unlock their chemical biodiversity: headspace solid-phase microextraction (HS-SPME) and hydrodistillation (HD) followed by gas chromatography and mass spectrometry (GC-MS); Fourier transform mid-infrared spectroscopy (FT-MIR); ultra high performance liquid chromatography with diode array detector and quadrupole time-of-flight mass spectrometry (UHPLC-DAD-QqTOF-MS) and DPPH and FRAP assay. The volatiles variability enabled differentiation of the samples in 2 groups of Mediterranean propolis: non-poplar type (dominated by α-pinene) and polar type (characterized by cadinane type sesquiterpenes). Spectral variations (FT-MIR) associated with phenolics and other balsam-related components were significant among the samples. The UHPLC profiles allowed to track compounds related to the different botanical sources such as poplar (pinobanksin esters, esters and glycerides of phenolic acids, including prenyl derivatives), coniferous trees (labdane, abietane diterpenes) and Cistus spp. (clerodane and labdane diterpenes, methylated myricetin derivatives). The antioxidant potential determined by DPPH ranged 2.6-81.6 mg GAE/g and in FRAP assay 0.1-0.8 mmol Fe2+/g. The highest activity was observed for the samples of Populus spp. origin. The antioxidant potential and phenolic/flavonoid content was positively, significantly correlated.
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Affiliation(s)
- Lidija Svečnjak
- Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia;
| | - Zvonimir Marijanović
- Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia;
| | - Piotr Okińczyc
- Department of Pharmacognosy and Herbal Medicines, Wrocław Medical University, ul. Borowska 211a, 50-556 Wrocław, Poland;
| | - Piotr Marek Kuś
- Department of Pharmacognosy and Herbal Medicines, Wrocław Medical University, ul. Borowska 211a, 50-556 Wrocław, Poland;
| | - Igor Jerković
- Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia;
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El‐Guendouz S, Lyoussi B, Miguel MG. Insight on Propolis from Mediterranean Countries: Chemical Composition, Biological Activities and Application Fields. Chem Biodivers 2019; 16:e1900094. [DOI: 10.1002/cbdv.201900094] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 05/09/2019] [Indexed: 01/01/2023]
Affiliation(s)
- Soukaina El‐Guendouz
- Laboratory of Physiology-Pharmacology-Environmental HealthFaculty of Sciences Dhar El MehrazUniversity Sidi Mohamed Ben Abdallah Fez, BP 1796 Atlas 30000 Morocco
- Department of Chemistry and PharmacyFaculty of Science and TechnologyMeditBioUniversity of Algarve Campus de Gambelas, MeditBio Faro 8005-139 Portugal
| | - Badiaa Lyoussi
- Laboratory of Physiology-Pharmacology-Environmental HealthFaculty of Sciences Dhar El MehrazUniversity Sidi Mohamed Ben Abdallah Fez, BP 1796 Atlas 30000 Morocco
| | - Maria G. Miguel
- Department of Chemistry and PharmacyFaculty of Science and TechnologyMeditBioUniversity of Algarve Campus de Gambelas, MeditBio Faro 8005-139 Portugal
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Papachristoforou A, Koutouvela E, Menexes G, Gardikis K, Mourtzinos I. Photometric Analysis of Propolis from the Island of Samothraki, Greece. The Discovery of Red Propolis. Chem Biodivers 2019; 16:e1900146. [PMID: 31081187 DOI: 10.1002/cbdv.201900146] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 05/10/2019] [Indexed: 11/07/2022]
Abstract
Propolis presents notable and variable antioxidant activity depending on the territory and the local flora. As a result, propolis collected from areas presenting botanical diversity can become an intriguing research field. In the present study, we examined propolis from different areas of Samothraki, a small Greek island in the north-eastern Aegean Sea, considered a hot-spot of plant biodiversity. The analysis of propolis samples presented huge variability in the antioxidant activity, the total polyphenol content and the total flavonoids content. Propolis from two areas presented high antioxidant activity with a maximum at 1741.48 μmol of Trolox equivalents per gram of dry propolis weight, very high polyphenol content, 378.73 mg of gallic acid equivalents per gram of dry propolis weight, and high flavonoid content with a maximum concentration of 70.31 mg of quercetin equivalents per gram of dry propolis weight. The samples that presented the best qualitative characteristics were all red propolis which is a type that has never been reported in any part of Europe.
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Affiliation(s)
- Alexandros Papachristoforou
- Department of Food Science and Nutrition, University of the Aegean, GR-81400, Lemnos, Greece.,Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, 3036, Limassol, Cyprus
| | - Evgenia Koutouvela
- Laboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece
| | - George Menexes
- Laboratory of Agronomy, School of Agriculture, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece
| | | | - Ioannis Mourtzinos
- Laboratory of Food Chemistry & Biochemistry, Department of Food Science and Technology, School of, Agriculture, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece
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Falcão SI, Lopes M, Vilas-Boas M. A First Approach to the Chemical Composition and Antioxidant Potential of Guinea-Bissau Propolis. Nat Prod Commun 2019. [DOI: 10.1177/1934578x19844138] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Propolis is a natural product derived from plant resins collected by honeybees and used in the beehive as a construction and defensive material. The broad spectrum of biological activities is dependent on the chemical diversity of its composition which is determined by the floral sources at the site of collection. For the first time, the chemical composition of Guinean propolis as well as its physicochemical properties, phenolic composition, and antioxidant activity was assessed. Eight compounds were identified through LC/DAD/ESI-MS n , mostly isoflavonoids, resembling Nigerian and Brazilian red propolis from the genus Dalbergia.
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Affiliation(s)
- Soraia I. Falcão
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, Bragança, Portugal
| | - Mélissa Lopes
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, Bragança, Portugal
| | - Miguel Vilas-Boas
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, Bragança, Portugal
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Characterization and biological evaluation of selected Mediterranean propolis samples. Is it a new type? Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2015.08.025] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Antioxidant and α-Glucosidase Inhibitory Properties and Chemical Profiles of Moroccan Propolis. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501001139] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The chemical profiles of propolis hydroalcoholic extracts from different regions of Morocco were studied by gas chromatography coupled to mass spectrometry after silylation. Samples from Khamissat and Imouzzer belong to the poplar type, as typical poplar flavonoids predominated. Propolis from Rabat also contained high percentage of flavonoids, but had significantly lower amount of phenolic acid esters and contained no pinobanksin-3- O-acetate. Propolis from Bhalil demonstrated a profile rich in diterpenes (74.3%), and is a typical Mediterranean propolis sample. All samples had the capacity for inhibiting glucosidase and amylase enzymes, as well as the capacity for scavenging free radicals and preventing lipid peroxidation. Both activities were significantly higher in the flavonoids-rich samples.
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Ristivojević P, Trifković J, Andrić F, Milojković-Opsenica D. Poplar-type Propolis: Chemical Composition, Botanical Origin and Biological Activity. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501001117] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Propolis is one of the most used natural products known for centuries for its beneficial effects. Due to significant differences in chemical composition of samples originating from different geographic and climatic zones it is crucial to characterize reliably each type of propolis. This article comprises the latest findings concerning the poplar type propolis, i.e. it gives a cross section of chemical composition, botanical origin and biological activity of poplar type propolis in order to encourage further investigations that would indicate its beneficial effects.
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Affiliation(s)
- Petar Ristivojević
- Innovation Centre of the Faculty of Chemistry Ltd, Studentski trg 12–16, 11158 Belgrade, Serbia
| | - Jelena Trifković
- University of Belgrade - Faculty of Chemistry, Studentski trg 12–16, P.O.Box 158, 11158 Belgrade, Serbia
| | - Filip Andrić
- University of Belgrade - Faculty of Chemistry, Studentski trg 12–16, P.O.Box 158, 11158 Belgrade, Serbia
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Papachroni D, Graikou K, Kosalec I, Damianakos H, Ingram V, Chinou I. Phytochemical Analysis and Biological Evaluation of Selected African Propolis Samples from Cameroon and Congo. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000118] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The objective of this study was the chemical analysis of four selected samples of African propolis (Congo and Cameroon) and their biological evaluation. Twenty-one secondary metabolites belonging to four different chemical groups were isolated from the 70% ethanolic extracts of propolis and their structures were elucidated on the basis of spectral evidence. Three triterpenes and two diprenyl-flavonoids were identified from Congo propolis, which has been investigated for the first time, while thirteen triterpenes, three diprenyl-flavonoids, two monoterpenic alcohols and one fatty acid ester have been identified from Cameroon propolis samples. To our knowledge, the identified diprenyl-flavonoids, as well as five of the isolated and determined triterpenes, are reported for the first time in propolis. Moreover, the total polyphenol content was estimated in all extracts and the antimicrobial activities of all four extracts were studied against six Gram-positive and -negative bacteria and three pathogenic fungi, showing an interesting antibacterial profile.
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Affiliation(s)
- Danai Papachroni
- Division of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, University of Athens, Panepistimiopolis-Zografou, Athens 15771, Greece
| | - Konstantia Graikou
- Division of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, University of Athens, Panepistimiopolis-Zografou, Athens 15771, Greece
| | - Ivan Kosalec
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Croatia
| | - Harilaos Damianakos
- Division of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, University of Athens, Panepistimiopolis-Zografou, Athens 15771, Greece
| | | | - Ioanna Chinou
- Division of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, University of Athens, Panepistimiopolis-Zografou, Athens 15771, Greece
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